Fabrication of Double-Sided YBa 2 Cu 3 O 7 Films on CeO 2 -Buffered Sapphire Substrates by MOD Process

A predetermined number of plural lines of compressed data are processed as one group before addition of fill bits while a minimum transmission time for each such predetermined number of lines, that is, plural lines having a predetermined length is determined in advance in consideration of a recording speed and other operating factors of a receiver. Necessary fill bits are added to each plural lines only when the actual transmission time of the plural lines of compressed data is shorter than the minimum transmission time. Fill bits may be added to compressed data bits not only for each plural lines but on a line by line basis in combination in accordance with a construction and function of a receiver.